<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script src="../js/jquery-3.6.0.min.js"></script>
    <script>

        $(function () {
            $("input[name = 'luckyColor'][value = 'yellow']").attr('value', 'green')
        })

    </script>
</head>
<body>
<form>
    <label>
        用户名；<input type="text" name="username">
        <br>
        密码；<input type="password" name="pwd">
        <br>
        确认密码；<input type="password" name="repwd">
        <br>
        性别；<input type="radio" name="sex" value="man" checked="checked">男
        <input type="radio" name="sex" value="woman">女
        <br>
        爱好；<input type="checkbox" name="hobby" value="code" checked="checked">编程
        <input type="checkbox" name="hobby" value="run">跑步
        <input type="checkbox" name="hobby" value="swim">游泳
        <br>
        幸运颜色；<input type="checkbox" name="luckyColor" value="red" checked="checked">红
        <input type="checkbox" name="luckyColor" value="blue">蓝
        <input type="checkbox" name="luckyColor" value="yellow">黄
        <br>
    </label>
</form>
</body>
</html>